//
//  Test20.cpp
//  CPPTest
//
//  Created by you5 Yi on 2021/9/25.
//

#include "Test20.hpp"
#include <iostream>
using namespace std;

void setzero(int &a)
{
    a = 0;
}

void test20()
{
    int x1 = 10, x2 = 20;
    
    setzero(x1);
    setzero(x2);
    cout<<x1<<x2<<endl;
}
